cadwqan



Rm l E A. 4 O M A h d 6 0 We G L W n f w M j Z O m an a 0 F W3 J T F (No Model.)

V6]? for UNITED STATES THOMAS C. GADXVGAN, OF SPRINGFI ELD, OHIO, ASSIGNOR OF ONE-HALF TO BENJAMIN K. JENNINGS, OF SAME PLACE.

FEED- SPECIFICATION forming part of Letters Application tiled November 29, 1884.

To all whom it may concern.-

Be it known that 1, Tnoruns O. GADW'GAN,

a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Feed-Mills; and I do declare the following to be a full, clear, and exactdcscription of the invention, such as will enable others skilled in the art to which. it

appertains to make and use'the same, reference being bad to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in feed-mills.

My invention relates to that class of feedmills used for crushing and grinding corn in the ear; and it consists in certain improvements in the grinding devices and in the adjustment of the same. The mill is a vertical one, and although designed for crushing and grinding corn in the car, may be used for other grinding purposes.

Figure 1 is a top view of my improved feedmill. Fig. 2 is a vertical longitudinal section of the same throughl line as. Fig. 3 is a crosssection through line y of Fig. 1. Fig. 4 is an end view of the mill as seen from the right, Fig. 1.

The feed-mill combines in its operative parts a crusher for crushing corn in the ear, and a toothed grindingwheel mounted upon the same shaft with the crusher, which revolves between two serrated rings. One of the latter is fixed and the other is provided with means for adjusting it toward or from the grindingwheel. The grinding-wheel is held on the shaft by splines, and is self-adjustable.

A is the crusher which consists of a cylinder with a number of teeth, a a, set in spiral lines thereon. It is mounted on a horizontal shaft, 1), which extends through the mill and has its bearings at the respective ends of the same, as seen in Fig. 2. The case G in which the grinding devices are inolosed has on its outer end a sleeve portion, 0, which extends to some distance outward from the latter, and in this sleeve the right end of the shaft, as 50 viewed in Fig. 2, has its bearing.

MILL.

Patent. No. 323,561, dated August 4 1885.

(No model.)

The grinding devices consist of an-openspoked wheel, D, which slides on splines don the shaft 1), and is free to adjust itself between the rings (1 and d on either side of the same. The rim e of the wheel is serrated or toothed upon each side, and at intervals on its periphery are scrapers a e, which extend out from each side of the rim far enough to clean that part of the case over the edge of the rings d and d, there being a sutiicient space outside of the rings and within the case for this purpose. The ring (1 in that part of the circular case C- next to the crusher is held in place by transvere bultsff, and the ring (1 is made adjustable toward and from the grindingwheel D'by means ofa sliding frame, E, which latter is constructed of the three-armed spider 9, through the hub of which the adjustingscrew 2' extends into the end of the sleeve 0 in the axial line of the shaft 1). The spiderg is connected with ring cl by three parallel rods,

h 71, extending from the ends of the spider arms into the ring. They are screwed into the latter to allow the ring to be taken out when worn. The rods h it slide freely through the 7 5 end plate of the grinding-case through holes h h in the latter. The adj usting-screwi has a concentric groove, i, in that part within the hub of the spider 9,, and a small screw, 1', entering the hub has its inner unthreaded end engaging this groove, which allows of the adjustment of the frame and ring outward and inward, the shaft of the screw turning freely within the hub in operating. The sleeve 0 has a threaded hole in the center of its end, and the threaded end of the screw i engages therewith, thus retaining the parts in adjustment. Both the crusher-caseB and the grinding-case O are cylindrical.

The crusher consists of the cylindrical cast 0 piece A. with spirally-arranged teeth and the hollow cylindrical case B in which itrotates. The latter has one or more longitudinal ribs therein, one of which is shown in the bottom of the same in Fig. 2. The right end of case 5 13 opens into the grinding-case G to allow the crushed corn to pass into the latter to be ground.

As the corn in the ear is fed into the crushercase, which is open at the top, as shown in too Fig. 1, it is crushed by the operation of the teeth a a of the crusher A, and the crushed material passes from the crusher through the opening leading therefrom into the grindingcase 0, and being thrown outward by the spoked grinding-wheel D is reduced to the required degree of fineness between the rim ofthis wheel and the ring on each side of the latter. The openings between the spokes j j of the wheel allow the material to pass readily through from the left to the right side of the wheel and during the operation of grinding the reduction is about the same on one side of wheel D as on the other, and as the latter is free to move along the shaft on the splines (Z (Z it readily adj usts itself to the middle of the space between the two rings d and d in the adjustment of the latter.

The mill is supported upon a low frame to give it firmness and immcvability, sufficient space being left below the grinding-case G for the discharge-spout n, which is bolted to the bottom of the latter.

I claim as my invention 1. In a feed mill, the combination of a crusher, a fixed and an adjustable grinding ring and a grinding-wheel rotating in a vertical plane between saidgrinding-rings, said grinding-wheel being free to move h0rizontally on its shaft and to adjust itself to the grindingsurfaces of the ring on either side of the same, as set forth.

2. In a grinding-mill, the combination oftlie two grinding-rings, one being fixed and the other provided with means for adjustment, and the wheel rotating in a vertical plane be tween said grindingrings, with a grindingsurface on either side of the same, and having a central opening therein to allow the ma terial to be carried to said grinding'surfaces, said grinding-wheel being free to move in either direction in the line of its shaft, and thereby adjust itself to the grinding-surface of both said grindingrings, substantially as set forth.

3. In a grinding-mill, the combination of the cylindrical case with an extended sleeve central thereon, a horizontal shaft provided with splines having a bearing in said sleeve, a fixed'grinding-ring in one side of said case, a grinding-ring with means for adjustment attached thereto in the opposite side, and an open-spoked grindingwheel rotating between the fixed and the adjustable grinding-rings, said grinding-wheel being free to move toward either grinding-ring on said shaft, and provided with scrapers projecting from either side of its rim into the spaces within the case outside said grinding-rings, substantially as and for the purpose hereinbefore set forth.

4. In a grinding-mill, the combination of a cylindrical case with a sleeve cast central thereon, a horizontal shaft having a bearing in the latter, an open self-adjustable grindingwheel rotating with said shaft, a fixed grinding-ring on the inner side of the same, a grinding-ring on the outer side, and means for effccting the adjustment of the latter in either direction in the line of said shaft, consisting of a sliding frame and a screw engaging the end of said sleeve, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS C. OADWVGAN.

Witnesses:

WM. .GANOR, B. O. CONVERSE. 

